Hi Developer-Team,
at first: a great app. It is very useful.
second: would be great, if it is possible to sync multiple calendar:
a) multiple calendar: Google-calendar <-->Outlook-calendar, for sync different Google- to different Outlook - calendar
b) different Google-calendar to show in Outlook (Google calendar --> Outlook)

This is on the list of to-do's, but not the highest just yet. I do plan on getting to it though.

For the meantime, it is possible to have mutliple Portable versions of the app running, each with their own configuration (make sure your have the Setting check for "Portable mode" too to make sure the settings.xml file is held next to the executable
and not in your Windows profile.